"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 极致RTO-数据库系统类
Case Name   : 开启极致RTO，业务压力后进行数据导入导出过程中，备机异常挂住后恢复；导出完成后，关闭极致RTO，主备数据一致
Create At   : 2020/10/12
Owner       : @peilinqian
Description :
    1、开启极致RTO
    2、进行gs_dump
    3、进行gs_restore
    4、备机数据库进程挂住kill - 19；查询备机数据数据进程状态
    5、查询主备状态
    6、restore进程是否异常
    7、等待10S，恢复备机数据库进程kill - 18；查询备机数据数据进程状态
    8、查询主备状态\restore进程是否异常
    9、restore结果是否异常
    10、restore执行完成后，关闭极致RTO
    11、查询主备数据是否一致
Expect      :
    1、极致RTO开启成功
    2、数据导入成功
    3、数据导出开始
    4、kill -19备机成功
    5、主备状态正常
    6、备机导出进程状态正常
    7、kill -18备机恢复成功
    8、主备状态正常
    9、restore结果正常
    10、关闭极致RTO成功
    11、查询主备数据一致
History     :
    modified：2021-3-9 by 5328113;主备同步方法调用修改，增加超时等待时间；
    modified：2021-3-9 by 5328113;修改dump文件路径；
    modified：2021-2-5 by 5328113;guc参数还原时指定还原值
    modified:2020-11-18 by 5328113;修改kill-18后的断言；可能存在Rl状态；
    modified:2020-12-14 by 5328113;删除kill-19、kill -18后的断言；
    变化的状态可能很多状态变化时间也不一定，只需保证后续恢复后功能正常即可；
    modified:2020-12-17 by 5328113;修改restore指定新数据库，以防用例失败影响tpcc库及tpcc运行；
    teardown增加异常中断kill -18恢复操作
    modified:2021-1-28 by 5328113;tpcc执行完成增加主备同步，删除start成功断言，删除不必要tpcc
"""

import os
import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import *
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node
from yat.test import macro


class ExtremeRto(unittest.TestCase):
    nodes_tuple = ('PrimaryDbUser', 'Standby1DbUser', 'Standby2DbUser')

    @RestartDbCluster(*nodes_tuple)
    def setUp(self):
        self.log = Logger()
        self.log.info('----Opengauss_Reliability_RTO_Dbsys_Case008:初始化----')
        self.pri_root = Node(node='PrimaryRoot')
        self.pri_dbuser = Node(node='PrimaryDbUser')
        self.sta1_root = Node(node='Standby1Root')
        self.sta1_dbuser = Node(node='Standby1DbUser')
        self.sta2_dbuser = Node(node='Standby2DbUser')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.sta_1_sh = CommonSH('Standby1DbUser')
        self.sta_2_sh = CommonSH('Standby2DbUser')
        self.com = Common()
        self.constant = Constant()
        self.tpcc_path = macro.TPCC_PATH
        dump_file_name = 'test_pid.tar'
        self.parent_path = os.path.dirname(macro.DB_INSTANCE_PATH)
        self.file_name = os.path.join(self.parent_path, dump_file_name)

        self.log.info("-----创建restore数据库----")
        self.new_db_name = 'restore_db'
        self.create_db_cmd = f'drop database if exists {self.new_db_name};' \
            f'create database {self.new_db_name};'
        self.drop_db_cmd = f'drop database {self.new_db_name};'
        create_db_result = self.pri_sh.executDbSql(self.create_db_cmd)
        self.log.info(create_db_result)
        self.assertIn(self.constant.CREATE_DATABASE_SUCCESS_MSG,
                      create_db_result)
        self.node_num = self.com.get_node_num(self.pri_root)
        self.log.info(self.node_num)
        self.max_time = 1200
        self.min_time = 300

    def test_main(self):
        try:
            self.log.info('----1、开启极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'replication_type=1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=off')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)

            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----2、进行gs_dump----')
            dump_result = self.pri_sh.dumpFile(self.file_name,
                                               get_detail=False)
            self.log.info(dump_result)
            self.assertTrue(dump_result)

            self.log.info('----3、进行gs_restore----')
            restore_thread = ComThread(self.pri_sh.restoreFile,
                                       args=(self.file_name,
                                             '',
                                             True,
                                             self.new_db_name,))
            restore_thread.setDaemon(True)
            restore_thread.start()
            time.sleep(3)

            self.log.info('----4、备机数据库进程挂住kill - 19；----')
            self.com.kill_pid_keyword('M standby', 19, self.sta1_dbuser)
            time.sleep(1)

            self.log.info('----查询备机数据数据进程状态----')
            db_ps_cmd = 'ps ux | grep \'M standby\' | grep -v grep'
            self.log.info(db_ps_cmd)
            db_ps_result = self.sta1_dbuser.sh(db_ps_cmd).result()
            self.log.info(db_ps_result)

            self.log.info('----5、查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----6、restore进程是否异常----')
            restore_ps_cmd = 'ps ux | grep gs_restore | grep -v grep'
            self.log.info(restore_ps_cmd)
            restore_ps_result = self.pri_dbuser.sh(restore_ps_cmd).result()
            self.log.info(restore_ps_result)

            self.log.info('----7、等待10S，恢复备机数据库进程kill - 18；----')
            time.sleep(10)
            self.com.kill_pid_keyword('M standby', 18, self.sta1_dbuser)

            time.sleep(1)
            self.log.info('----查询备机数据数据进程状态----')
            db_ps_cmd = 'ps ux | grep \'M standby\' | grep -v grep'
            self.log.info(db_ps_cmd)
            db_ps_result = self.sta1_dbuser.sh(db_ps_cmd).result()
            self.log.info(db_ps_result)

            self.log.info('----8、查询主备状态----')
            self.pri_sh.getDbClusterStatus('status')

            self.log.info('----restore进程是否异常----')
            restore_ps_cmd = 'ps ux | grep gs_restore | grep -v grep'
            self.log.info(restore_ps_cmd)
            restore_ps_result = self.pri_dbuser.sh(restore_ps_cmd).result()
            self.log.info(restore_ps_result)

            self.log.info('----9、restore结果是否异常----')
            # 等待restore执行完成
            restore_thread.join()
            restore_result = restore_thread.get_result()
            self.assertNotIn(self.constant.RESTORE_FAIL_MSG, restore_result)

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.max_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

        finally:
            self.log.info('----10、restore执行完成后，关闭极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=on')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            # 校验备机是否完成数据同步
            self.log.info('校验备机是否完成数据同步')
            flag_1 = self.sta_1_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_1)
            flag_2 = self.sta_2_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_2)

            self.log.info('----11、查询主备数据是否一致----')
            nodes_tuple = (self.pri_dbuser,
                           self.sta1_dbuser,
                           self.sta2_dbuser)
            flag = self.com.check_data_sample_by_all(r'\d', *nodes_tuple)
            self.assertTrue(flag)

            table_dict = self.com.format_sql_result(
                self.pri_sh.executDbSql(r'\d'))
            table_name = table_dict.get('Name')
            for name in table_name:
                select_sql = f'select count(*) from {name};'
                flag = self.com.check_data_sample_by_all(select_sql,
                                                         *nodes_tuple)
                self.assertTrue(flag)

    def tearDown(self):

        self.log.info('----异常中断时，恢复数据库进程kill - 18----')
        self.com.kill_pid_keyword('M standby', 18, self.sta1_dbuser)

        time.sleep(1)
        self.log.info('----查询备机数据数据进程状态----')
        db_ps_cmd = 'ps ux | grep \'M standby\' | grep -v grep'
        self.log.info(db_ps_cmd)
        db_ps_result = self.sta1_dbuser.sh(db_ps_cmd).result()
        self.log.info(db_ps_result)

        self.log.info('----删除tar文件----')
        self.pri_dbuser.sh(f'rm -rf {self.file_name}').result()
        self.log.info(self.pri_dbuser.sh(f'ls -l {self.file_name}').result())

        self.log.info("----删除restore库----")
        drop_db_result = self.pri_sh.executDbSql(self.drop_db_cmd)
        self.log.info(drop_db_result)

        self.log.info('----校验刷脏页是否完成----')
        self.pri_sh.check_whether_remain_dirty_page()

        self.log.info('----Opengauss_Reliability_RTO_Dbsys_Case008:执行完毕----')
